A Green's function exchange platform for seismological research and education: applications and examples

Abstract:

The study of seismic sources from measured waveforms requires synthetic 
elementary seismograms (Green's functions, GFs) calculated for specific earth 
models and source receiver geometries. 

Since the calculation of GFs is computationally expensive and requires careful 
parameter testing and quality control, pre-calculated GF databases, which can 
be re-used for different types of applications, can be of advantage. 

We developed a GF database web platform for the seismological community, where 
a researcher can share Green's function stores and retrieve synthetic 
seismograms on the fly for various point and extended earthquake source models 
for many different earth models at local, regional and global scale. 

This web service is part of a rich new toolset for the creation and handling of
Green's functions and synthetic seismograms. It can be used off-line or in client mode.

We demonstrate core features of the GF platform with different applications on 
global, regional and local scales. These include the automatic inversion of 
kinematic source parameters from teleseismic body waves, the improved depth 
estimate of shallow induced earthquakes from regional seismological arrays, or 
the relative moment tensor inversion of volcanic earthquakes.